Condensation, mould and landlords, Isle of Wight
Indoor air quality surveys in the Isle of Wight
CO2, humidity and particulates logged for a week, with plain-English findings, across the Isle of Wight.
- From £160 inc VAT per home
- By arrangement

An indoor air quality survey measures how fresh and how damp the air in a building really is, over days rather than minutes. We place loggers that record CO2, humidity and temperature (and particulates in workplaces), then explain what the readings mean and what ventilation changes would help.
If you are anywhere in the Isle of Wight, send the postcode and a few photos and we will tell you what we would recommend. Towns we cover include Cowes, Sandown, Newport and Ryde.
Air quality surveys in the Isle of Wight at a glance
- Area
- Isle of Wight
- Towns listed
- 4, largest Newport
- Postcode districts
- PO33, PO34, PO30, PO31, PO35 and PO36
- Price region
- South East
- Survey
- By arrangement, travel quoted first
What indoor air quality surveys involves
CO2 is a practical indicator of whether a room is getting enough fresh air for the number of people in it: levels that climb steadily through a meeting or a night in a bedroom point to under-ventilation. Humidity readings show whether moisture is being removed or lingering long enough to cause condensation and mould. Surveys are useful before spending money: they show whether a problem is constant or happens at particular times, which rooms are worst, and whether an existing system is doing its job.
Before and after
Readings taken before and after a ventilation upgrade to show the difference.
Spot checks
Readings taken during a single visit, where a quick answer is enough.
Home survey
Loggers in bedrooms, living areas and wet rooms for 7 days, with a written summary.
Guide prices in the Isle of Wight
| Work | Guide price |
|---|---|
| Home air quality check: CO2, humidity and temperature logged for 7 days (per home) | £160–£270 inc VAT |
| Workplace air quality survey: CO2, PM2.5, humidity, 7 days logged, written report (per survey) | £550–£1,325 + VAT |
Guide prices using South East rates. Home prices include VAT at 20%; business prices exclude VAT. A guide price is not a quote: we confirm a fixed price in writing first. Travel is quoted separately for this area.
Signs it is time to call us
- A new ventilation system that does not feel right
- A bedroom that feels stale in the morning
- Headaches or drowsiness in meeting rooms or classrooms
Rules in England
In England, ventilation is covered by Part F of the Building Regulations and its guidance, Approved Document F (2021 edition). Employers have a separate duty under the Workplace Regulations 1992 to provide effective and suitable ventilation.
How the job runs
- Plan
- Place loggers
- Log
- Analyse
- Report
Towns we cover in the Isle of Wight
Questions about indoor air quality surveys in the Isle of Wight
Is the survey free in the Isle of Wight?
Visits here are by arrangement. Because of the ferry or long travel involved, we quote travel separately and in writing before you commit, and we can often combine visits to keep the cost down.
What is a good CO2 level indoors?
Outdoor air is around 400 to 450 parts per million; indoor levels that stay well below about 1,000 ppm usually indicate reasonable ventilation for the people in the room, while sustained levels much higher suggest it needs improving.
What humidity should a home be?
Relative humidity of roughly 40 to 60 percent is comfortable for most homes. Readings that sit above 70 percent for long periods make condensation and mould much more likely.
Which rules apply to ventilation in the Isle of Wight?
In England, ventilation in new and altered homes is covered by Approved Document F of the Building Regulations. Landlords also have duties under the Housing Health and Safety Rating System, and workplaces must be ventilated under the Workplace (Health, Safety and Welfare) Regulations 1992.
Which towns in the Isle of Wight do you cover?
All of the Isle of Wight, including Cowes, Sandown, Newport and Ryde. If your town is not listed, send the postcode and we will confirm.
Other services in the Isle of Wight
Get a guide price in two minutes
Answer a few questions for a price range, or send photos and we will come back to you with a written quote.